Being that the 21" arm meets in the center of 2 3/8 total wheel spacing with 1 3/16 from center to wheel on top, and 1 3/16" from center to wheel on bottoms, would the force on each wheel still be 1414.7 lbs or 707.3 on each for a total of 1414.7?
fyi, here is a picture of the "c" channel that...